Home / 207,845.34-311,643.08-81,334.68

Finding the Fourth Proportional to 207,845.34, 311,643.08 and 81,334.68

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Solution

The fourth proportional to 207,845.34, 311,643.08 and 81,334.68 is: 121,953.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,845.34 : 311,643.08 = 81,334.68 : x
  2. Step 2: Convert to fraction form
    207,845.34/311,643.08 = 81,334.68/x
  3. Step 3: Cross multiply
    207,845.34x = 311,643.08 × 81,334.68
  4. Step 4: Simplify right side
    207,845.34x = 25,347,390,186.01
  5. Step 5: Solve for x
    x = 25,347,390,186.01/207,845.34
  6. Step 6: Final answer
    x = 121,953.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.